In an attempt to clean up its books before the announced merger with its subsidiary bank, Housing Development Finance Corporation Limited (BSE:500010) is in the final stages of selling four large distressed accounts, including that of SITI Networks Limited (BSE:532795), to Assets Care and Reconstruction Enterprise (ACRE), two people aware of the discussions told ET. ACRE has given a binding bid of ?270 crore to acquire mortgage-financier HDFC's INR 5.77 billion portfolio of the four corporate accounts, the people cited above said. HDFC and ACRE did not respond to ET's queries.